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Internet Message Format  |  2001-12-16  |  10KB
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  2. Subject: FAQTs - Knowledge Base - View Entry - Scanning folders for new files
  3. Date: Sun, 16 Dec 2001 11:23:19 -0600
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  75. <P>
  76. <H3><A =
  77. href=3D"http://www.faqts.com/knowledge_base/index.phtml/fid/1">FAQTS</A> =
  78. :=20
  79. <A =
  80. href=3D"http://www.faqts.com/knowledge_base/index.phtml/fid/131">Computer=
  81. s</A>=20
  82. : <A=20
  83. href=3D"http://www.faqts.com/knowledge_base/index.phtml/fid/135">Programm=
  84. ing</A> :=20
  85. <A =
  86. href=3D"http://www.faqts.com/knowledge_base/index.phtml/fid/138">Language=
  87. s</A>=20
  88. : <A =
  89. href=3D"http://www.faqts.com/knowledge_base/index.phtml/fid/199">Python</=
  90. A> :=20
  91. <A =
  92. href=3D"http://www.faqts.com/knowledge_base/index.phtml/fid/538">Snippets=
  93. </A> :=20
  94. <A =
  95. href=3D"http://www.faqts.com/knowledge_base/index.phtml/fid/551">Stream=20
  96. Manipulation</A> : <A=20
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  115.         Knowledge Base<OPTION value=3D548>Files Folder</OPTION></SELECT> =
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  122.     <TD align=3Dleft><STRONG>Entry</STRONG> </TD>
  123.     <TD align=3Dright><FONT face=3D"Times New Roman, Times" size=3D-1><A =
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  147.       <P><STRONG>4</STRONG> of <STRONG>4</STRONG> people (100%) answered =
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  150. <H3>Scanning folders for new files</H3>
  151. <P><SMALL>Jul 5th, 2000 13:03
  152. <P><A=20
  153. href=3D"http://www.faqts.com/knowledge_base/community/index.phtml/id/3">N=
  154. athan=20
  155. Wallace</A>, <A=20
  156. href=3D"http://www.faqts.com/knowledge_base/community/index.phtml/id/736"=
  157. >Fiona=20
  158. Czuczman</A><BR>Hans Nowak, Snippet 386, Darrell<BR></SMALL>
  159. <P><BR><PRE>"""
  160. Packages: operating_systems.windows
  161. """
  162.  
  163. """
  164. > what is the best and fastest way to scan a whole list of folders
  165. > to see if something is added or not. Please note that this should
  166. > also work for more than 1000 folders (and it shouldn't slow down
  167. > the system too much).
  168.  
  169. If your talking about NT then give this a try.
  170. <A =
  171. href=3D"http://www.dorb.com/darrell/win32WorkSvr/makeThumbsDG.py">http://=
  172. www.dorb.com/darrell/win32WorkSvr/makeThumbsDG.py</A>
  173. """
  174.  
  175. import win32file, win32event, os, winnt, traceback
  176.  
  177. def main():
  178.     """
  179.     Use events to avoid polling.
  180.     A sleep is used to give most files a chance to finish
  181.     being writen. Sort of a hack and might not be needed.
  182.     The notification event LAST_WRITE seems to trigger
  183.     at the start and end of writing. So a single file
  184.     will trigger this twice.
  185.     """
  186.     hnd=3Dwin32file.FindFirstChangeNotification\
  187.         (os.path.abspath('.')+os.sep+'incoming'\
  188.         ,0, winnt.FILE_NOTIFY_CHANGE_LAST_WRITE )
  189.  
  190.     while 1:
  191.         int =3D win32event.WaitForSingleObject( hnd, -1)
  192.             # Try to give the file time to finish writing
  193.         time.sleep(2)
  194.         print 'run'
  195.         try:
  196.             passed, failed, skipped =3D makeThumbNails()
  197.         except:
  198.             if '-d' in sys.argv:
  199.                 traceback.print_exc()
  200.             raise ThumbNailException
  201.         win32file.FindNextChangeNotification(hnd)
  202.  
  203.  
  204. main()</PRE><BR clear=3Dall><BR><BR>
  205. <P align=3Dright><FONT color=3D#999999 face=3D"Arial, Helvetica" =
  206. size=3D-1>=A9 1999-2000=20
  207. <A=20
  208. href=3D"http://www.faqts.com/clickthrough/index.phtml?sendtourl=3Dhttp%3A=
  209. %2F%2Fwww.synop.com">Synop=20
  210. Software</A> </FONT></P></BODY></HTML>
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